3D Phase Field Simulation of Austenite Grain Growth in Microalloyed Linepipe Steel

Morteza Toloui; Militzer Matthias

doi:10.4028/www.scientific.net/MSF.715-716.800

Paper Titles

Phase Field Model of Grain Growth Using Quaternions
p.776

Determining the No-Recrystallization Conditions for Industrial Hot Strip Rolling of Steels Using Laboratory Simulations
p.782

Microstructure Evolution in Sintering of Alumina-Zirconia Ceramics Simulated by a Modified Phase Field Method
p.788

Studies on Softening Kinetics of Niobium Microalloyed Steel Using Stress Relaxation Technique
p.794

3D Phase Field Simulation of Austenite Grain Growth in Microalloyed Linepipe Steel
p.800

Grain Size Distributions and Evolution Equations in Nanocrystalline Grain Growth
p.806

Microstructural Evolution in 9%Cr Heat Resistant Steels under Creep Conditions
p.813

In Situ Observations and Measurements of Mechanically Induced Grain Boundary Migration in a Scanning Electron Microscope
p.819

EBSD Analysis of Deformed and Partially Recrystallized Microstructures in ECAE-Processed Copper
p.825

HomeMaterials Science ForumMaterials Science Forum Vols. 715-7163D Phase Field Simulation of Austenite Grain...

3D Phase Field Simulation of Austenite Grain Growth in Microalloyed Linepipe Steel

Abstract:

Three dimensional (3D) phase field modelling is used to simulate austenite grain growth in X80 linepipe steel for thermal paths that are typical in the heat affected zone (HAZ). In the HAZ austenite grain growth is affected by pinning due to precipitates and their potential dissolution. Effective grain boundary mobilities are introduced that are consistent with strong pinning at lower temperatures and weak pinning at higher temperatures separated by the estimated dissolution temperature range of fine NbC precipitates. These mobility relationships are then used to describe austenite grain growth in bulk samples subjected to rapid heating and cooling conditions to replicate thermal cycles at various positions in the HAZ.